PC-8801mkII SR以降 Part202ch.net

ナイコンさん

482byteテトリス(html)

<body id=D onKeyDown=K=event.keyCode-38><script>Z=X=[B=A=12];function Y(){for(C
=[q=c=i=4];f=i--*K;c-=!Z[h+(K+6?p+K:C[i]=p*A-(p/9|0)*145)])p=B[i];for(c?0:K+6?h
+=K:t?B=C:0;i=K=q--;f+=Z[A+p])k=X[p=h+B[q]]=1;h+=A;if(f|B)for(Z=X,X=[l=228],B=[
[-7,-20,6,h=17,-9,3,3][t=++t%7]-4,0,1,t-6?-A:2];l--;)for(l%A?l-=l%A*!Z[l]:(P+=
k++,c=l+=A);--c>A;)Z[c]=Z[c-A];for(S="";i<240;S+=X[i]|(X[i]=Z[i]|=++i%A<2|i>228
)?i%A?"■":"■<br>":"＿");D.innerHTML=S+P;Z[5]||setTimeout(Y,i-P)}Y(h=K=t=P=0)
</script>